[Haskell-cafe] Derving NFData via Generics from a type that has a vector doesn't work. (was trying to understand out of memory exceptions)

[Andres Löh]

Hi again.

> instance NFData (V.Vector a) where rnf a = force a `seq` ()
>
>
> any reason why something like this isn't part of the vector library?

Quoting from the Changelog at http://hackage.haskell.org/package/vector :

"
Changes in version 0.10

   *  NFData instances
"

So it's there, and even in the current Haskell Platform.

Cheers,
  Andres

-- 
Andres Löh, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com